String amplitudes in the Hpp-wave limit of AdS3xS3

Abstract

We compute string amplitudes on pp-waves supported by NS-NS 3-form fluxes and arising in the Penrose limit of AdS3xS3xM. We clarify the role of the non-chiral accidental SU(2) symmetry of the background. We comment on the extension of our results to the superstring and propose a holographic formula in the BMN limit of the AdS3/CFT2 correspondence valid for any correlator.

Latex,no figures, 47 pp

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• D-branes and BCFT in Hpp-wave backgrounds
• Large-N limits of 2d CFTs, Quivers and AdS_3 duals
• Closed Strings in Misner Space: Stringy Fuzziness with a Twist
• Winding String Condensation and Noncommutative Deformation of Spacelike Singularity
• Noncommutative Field Theory on Homogeneous Gravitational Waves
• AdS/CFT v.s. String Loops
• The abelian cosets of the Heisenberg group
• Remarks on free field realization of SL(2,R)/U(1) x U(1) WZNW model
• Free field realization of superstring theory on AdS3
• The diagonal cosets of the Heisenberg group
• Isometric Embeddings and Noncommutative Branes in Homogeneous Gravitational Waves
• On conformal field theories based on Takiff superalgebras
• Brane Solutions with/without Rotation in PP-wave Spacetime
• Boundary states in the Nappi-Witten model
• Cubic interactions in the BMN limit of AdS(3) x S(3)
• String Theory in the Penrose Limit of AdS_2 x S^2
• Interactions for Winding Strings in Misner Space
• Plane waves from double extended spacetimes
• Integrable models based on non-semi-simple groups and plane wave target spacetimes
• The symmetric branes of the H4 WZW model